diff options
Diffstat (limited to 'src/gallium/drivers/i915simple/i915_prim_vbuf.c')
| -rw-r--r-- | src/gallium/drivers/i915simple/i915_prim_vbuf.c | 547 |
1 files changed, 547 insertions, 0 deletions
diff --git a/src/gallium/drivers/i915simple/i915_prim_vbuf.c b/src/gallium/drivers/i915simple/i915_prim_vbuf.c new file mode 100644 index 00000000000..4fda1ab64f5 --- /dev/null +++ b/src/gallium/drivers/i915simple/i915_prim_vbuf.c @@ -0,0 +1,547 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/** + * \file + * Build post-transformation, post-clipping vertex buffers and element + * lists by hooking into the end of the primitive pipeline and + * manipulating the vertex_id field in the vertex headers. + * + * XXX: work in progress + * + * \author José Fonseca <[email protected]> + * \author Keith Whitwell <[email protected]> + */ + + +#include "draw/draw_context.h" +#include "draw/draw_vbuf.h" +#include "pipe/p_debug.h" +#include "pipe/p_inlines.h" +#include "pipe/p_winsys.h" +#include "util/u_math.h" +#include "util/u_memory.h" + +#include "i915_context.h" +#include "i915_reg.h" +#include "i915_winsys.h" +#include "i915_batch.h" +#include "i915_state.h" + + +/** + * Primitive renderer for i915. + */ +struct i915_vbuf_render { + struct vbuf_render base; + + struct i915_context *i915; + + /** Vertex size in bytes */ + unsigned vertex_size; + + /** Software primitive */ + unsigned prim; + + /** Hardware primitive */ + unsigned hwprim; + + /** Genereate a vertex list */ + unsigned fallback; + + /* Stuff for the vbo */ + struct pipe_buffer *vbo; + size_t vbo_size; + size_t vbo_offset; + void *vbo_ptr; + size_t vbo_alloc_size; +}; + + +/** + * Basically a cast wrapper. + */ +static INLINE struct i915_vbuf_render * +i915_vbuf_render( struct vbuf_render *render ) +{ + assert(render); + return (struct i915_vbuf_render *)render; +} + + +static const struct vertex_info * +i915_vbuf_render_get_vertex_info( struct vbuf_render *render ) +{ + struct i915_vbuf_render *i915_render = i915_vbuf_render(render); + struct i915_context *i915 = i915_render->i915; + + if (i915->dirty) { + /* make sure we have up to date vertex layout */ + i915_update_derived( i915 ); + } + + return &i915->current.vertex_info; +} + + +static void * +i915_vbuf_render_allocate_vertices( struct vbuf_render *render, + ushort vertex_size, + ushort nr_vertices ) +{ + struct i915_vbuf_render *i915_render = i915_vbuf_render(render); + struct i915_context *i915 = i915_render->i915; + struct pipe_screen *screen = i915->pipe.screen; + size_t size = (size_t)vertex_size * (size_t)nr_vertices; + + /* FIXME: handle failure */ + assert(!i915->vbo); + + if (i915_render->vbo_size > size + i915_render->vbo_offset && !i915->vbo_flushed) { + } else { + i915->vbo_flushed = 0; + pipe_buffer_reference(screen, &i915_render->vbo, NULL); + } + + if (!i915_render->vbo) { + i915_render->vbo_size = MAX2(size, i915_render->vbo_alloc_size); + i915_render->vbo_offset = 0; + i915_render->vbo = pipe_buffer_create(screen, + 64, + I915_BUFFER_USAGE_LIT_VERTEX, + i915_render->vbo_size); + i915_render->vbo_ptr = pipe_buffer_map(screen, + i915_render->vbo, + PIPE_BUFFER_USAGE_CPU_WRITE); + pipe_buffer_unmap(screen, i915_render->vbo); + } + + i915->vbo = i915_render->vbo; + i915->vbo_offset = i915_render->vbo_offset; + i915->dirty |= I915_NEW_VBO; + + return (unsigned char *)i915_render->vbo_ptr + i915->vbo_offset; +} + + +static boolean +i915_vbuf_render_set_primitive( struct vbuf_render *render, + unsigned prim ) +{ + struct i915_vbuf_render *i915_render = i915_vbuf_render(render); + i915_render->prim = prim; + + switch(prim) { + case PIPE_PRIM_POINTS: + i915_render->hwprim = PRIM3D_POINTLIST; + i915_render->fallback = 0; + return TRUE; + case PIPE_PRIM_LINES: + i915_render->hwprim = PRIM3D_LINELIST; + i915_render->fallback = 0; + return TRUE; + case PIPE_PRIM_LINE_LOOP: + i915_render->hwprim = PRIM3D_LINELIST; + i915_render->fallback = PIPE_PRIM_LINE_LOOP; + return TRUE; + case PIPE_PRIM_LINE_STRIP: + i915_render->hwprim = PRIM3D_LINESTRIP; + i915_render->fallback = 0; + return TRUE; + case PIPE_PRIM_TRIANGLES: + i915_render->hwprim = PRIM3D_TRILIST; + i915_render->fallback = 0; + return TRUE; + case PIPE_PRIM_TRIANGLE_STRIP: + i915_render->hwprim = PRIM3D_TRISTRIP; + i915_render->fallback = 0; + return TRUE; + case PIPE_PRIM_TRIANGLE_FAN: + i915_render->hwprim = PRIM3D_TRIFAN; + i915_render->fallback = 0; + return TRUE; + case PIPE_PRIM_QUADS: + i915_render->hwprim = PRIM3D_TRILIST; + i915_render->fallback = PIPE_PRIM_QUADS; + return TRUE; + case PIPE_PRIM_QUAD_STRIP: + i915_render->hwprim = PRIM3D_TRILIST; + i915_render->fallback = PIPE_PRIM_QUAD_STRIP; + return TRUE; + case PIPE_PRIM_POLYGON: + i915_render->hwprim = PRIM3D_POLY; + i915_render->fallback = 0; + return TRUE; + default: + assert((int)"Error unkown primtive type" & 0); + /* Actually, can handle a lot more just fine... Fixme. + */ + return FALSE; + } +} + + + +/** + * Used for fallbacks in draw_arrays + */ +static void +draw_arrays_generate_indices( struct vbuf_render *render, + unsigned start, uint nr, + unsigned type ) +{ + struct i915_vbuf_render *i915_render = i915_vbuf_render(render); + struct i915_context *i915 = i915_render->i915; + unsigned i; + unsigned end = start + nr; + switch(type) { + case 0: + for (i = start; i+1 < end; i += 2) + OUT_BATCH( (i+0) | (i+1) << 16 ); + if (i < end) + OUT_BATCH( i ); + break; + case PIPE_PRIM_LINE_LOOP: + if (nr >= 2) { + for (i = start + 1; i < end; i++) + OUT_BATCH( (i-0) | (i+0) << 16 ); + OUT_BATCH( (i-0) | ( start) << 16 ); + } + break; + case PIPE_PRIM_QUADS: + for (i = start; i + 3 < end; i += 4) { + OUT_BATCH( (i+0) | (i+1) << 16 ); + OUT_BATCH( (i+3) | (i+1) << 16 ); + OUT_BATCH( (i+2) | (i+3) << 16 ); + } + break; + case PIPE_PRIM_QUAD_STRIP: + for (i = start; i + 3 < end; i += 2) { + OUT_BATCH( (i+0) | (i+1) << 16 ); + OUT_BATCH( (i+3) | (i+2) << 16 ); + OUT_BATCH( (i+0) | (i+3) << 16 ); + } + break; + default: + assert(0); + } +} + +static unsigned +draw_arrays_calc_nr_indices( uint nr, unsigned type ) +{ + switch (type) { + case 0: + return nr; + case PIPE_PRIM_LINE_LOOP: + if (nr >= 2) + return nr * 2; + else + return 0; + case PIPE_PRIM_QUADS: + return (nr / 4) * 6; + case PIPE_PRIM_QUAD_STRIP: + return ((nr - 2) / 2) * 6; + default: + assert(0); + return 0; + } +} + +static void +draw_arrays_fallback( struct vbuf_render *render, + unsigned start, + uint nr ) +{ + struct i915_vbuf_render *i915_render = i915_vbuf_render(render); + struct i915_context *i915 = i915_render->i915; + unsigned nr_indices; + + if (i915->dirty) + i915_update_derived( i915 ); + + if (i915->hardware_dirty) + i915_emit_hardware_state( i915 ); + + nr_indices = draw_arrays_calc_nr_indices( nr, i915_render->fallback ); + if (!nr_indices) + return; + + if (!BEGIN_BATCH( 1 + (nr_indices + 1)/2, 1 )) { + FLUSH_BATCH(NULL); + + /* Make sure state is re-emitted after a flush: + */ + i915_update_derived( i915 ); + i915_emit_hardware_state( i915 ); + i915->vbo_flushed = 1; + + if (!BEGIN_BATCH( 1 + (nr_indices + 1)/2, 1 )) { + assert(0); + goto out; + } + } + OUT_BATCH( _3DPRIMITIVE | + PRIM_INDIRECT | + i915_render->hwprim | + PRIM_INDIRECT_ELTS | + nr_indices ); + + draw_arrays_generate_indices( render, start, nr, i915_render->fallback ); + +out: + return; +} + +static void +i915_vbuf_render_draw_arrays( struct vbuf_render *render, + unsigned start, + uint nr ) +{ + struct i915_vbuf_render *i915_render = i915_vbuf_render(render); + + if (i915_render->fallback) { + draw_arrays_fallback( render, start, nr ); + return; + } + + /* JB: TODO submit direct cmds */ + draw_arrays_fallback( render, start, nr ); +} + +/** + * Used for normal and fallback emitting of indices + * If type is zero normal operation assumed. + */ +static void +draw_generate_indices( struct vbuf_render *render, + const ushort *indices, + uint nr_indices, + unsigned type ) +{ + struct i915_vbuf_render *i915_render = i915_vbuf_render(render); + struct i915_context *i915 = i915_render->i915; + unsigned i; + + switch(type) { + case 0: + for (i = 0; i + 1 < nr_indices; i += 2) { + OUT_BATCH( indices[i] | indices[i+1] << 16 ); + } + if (i < nr_indices) { + OUT_BATCH( indices[i] ); + } + break; + case PIPE_PRIM_LINE_LOOP: + if (nr_indices >= 2) { + for (i = 1; i < nr_indices; i++) + OUT_BATCH( indices[i-1] | indices[i] << 16 ); + OUT_BATCH( indices[i-1] | indices[0] << 16 ); + } + break; + case PIPE_PRIM_QUADS: + for (i = 0; i + 3 < nr_indices; i += 4) { + OUT_BATCH( indices[i+0] | indices[i+1] << 16 ); + OUT_BATCH( indices[i+3] | indices[i+1] << 16 ); + OUT_BATCH( indices[i+2] | indices[i+3] << 16 ); + } + break; + case PIPE_PRIM_QUAD_STRIP: + for (i = 0; i + 3 < nr_indices; i += 2) { + OUT_BATCH( indices[i+0] | indices[i+1] << 16 ); + OUT_BATCH( indices[i+3] | indices[i+2] << 16 ); + OUT_BATCH( indices[i+0] | indices[i+3] << 16 ); + } + break; + default: + assert(0); + break; + } +} + +static unsigned +draw_calc_nr_indices( uint nr_indices, unsigned type ) +{ + switch (type) { + case 0: + return nr_indices; + case PIPE_PRIM_LINE_LOOP: + if (nr_indices >= 2) + return nr_indices * 2; + else + return 0; + case PIPE_PRIM_QUADS: + return (nr_indices / 4) * 6; + case PIPE_PRIM_QUAD_STRIP: + return ((nr_indices - 2) / 2) * 6; + default: + assert(0); + return 0; + } +} + +static void +i915_vbuf_render_draw( struct vbuf_render *render, + const ushort *indices, + uint nr_indices) +{ + struct i915_vbuf_render *i915_render = i915_vbuf_render(render); + struct i915_context *i915 = i915_render->i915; + unsigned save_nr_indices; + + save_nr_indices = nr_indices; + + nr_indices = draw_calc_nr_indices( nr_indices, i915_render->fallback ); + if (!nr_indices) + return; + + if (i915->dirty) + i915_update_derived( i915 ); + + if (i915->hardware_dirty) + i915_emit_hardware_state( i915 ); + + if (!BEGIN_BATCH( 1 + (nr_indices + 1)/2, 1 )) { + FLUSH_BATCH(NULL); + + /* Make sure state is re-emitted after a flush: + */ + i915_update_derived( i915 ); + i915_emit_hardware_state( i915 ); + i915->vbo_flushed = 1; + + if (!BEGIN_BATCH( 1 + (nr_indices + 1)/2, 1 )) { + assert(0); + goto out; + } + } + + OUT_BATCH( _3DPRIMITIVE | + PRIM_INDIRECT | + i915_render->hwprim | + PRIM_INDIRECT_ELTS | + nr_indices ); + draw_generate_indices( render, + indices, + save_nr_indices, + i915_render->fallback ); + +out: + return; +} + + +static void +i915_vbuf_render_release_vertices( struct vbuf_render *render, + void *vertices, + unsigned vertex_size, + unsigned vertices_used ) +{ + struct i915_vbuf_render *i915_render = i915_vbuf_render(render); + struct i915_context *i915 = i915_render->i915; + size_t size = (size_t)vertex_size * (size_t)vertices_used; + + assert(i915->vbo); + + i915_render->vbo_offset += size; + i915->vbo = NULL; + i915->dirty |= I915_NEW_VBO; +} + + +static void +i915_vbuf_render_destroy( struct vbuf_render *render ) +{ + struct i915_vbuf_render *i915_render = i915_vbuf_render(render); + FREE(i915_render); +} + + +/** + * Create a new primitive render. + */ +static struct vbuf_render * +i915_vbuf_render_create( struct i915_context *i915 ) +{ + struct i915_vbuf_render *i915_render = CALLOC_STRUCT(i915_vbuf_render); + struct pipe_screen *screen = i915->pipe.screen; + + i915_render->i915 = i915; + + i915_render->base.max_vertex_buffer_bytes = 128*1024; + + /* NOTE: it must be such that state and vertices indices fit in a single + * batch buffer. + */ + i915_render->base.max_indices = 16*1024; + + i915_render->base.get_vertex_info = i915_vbuf_render_get_vertex_info; + i915_render->base.allocate_vertices = i915_vbuf_render_allocate_vertices; + i915_render->base.set_primitive = i915_vbuf_render_set_primitive; + i915_render->base.draw = i915_vbuf_render_draw; + i915_render->base.draw_arrays = i915_vbuf_render_draw_arrays; + i915_render->base.release_vertices = i915_vbuf_render_release_vertices; + i915_render->base.destroy = i915_vbuf_render_destroy; + + i915_render->vbo_alloc_size = 128 * 4096; + i915_render->vbo_size = i915_render->vbo_alloc_size; + i915_render->vbo_offset = 0; + i915_render->vbo = pipe_buffer_create(screen, + 64, + I915_BUFFER_USAGE_LIT_VERTEX, + i915_render->vbo_size); + i915_render->vbo_ptr = pipe_buffer_map(screen, + i915_render->vbo, + PIPE_BUFFER_USAGE_CPU_WRITE); + pipe_buffer_unmap(screen, i915_render->vbo); + + return &i915_render->base; +} + + +/** + * Create a new primitive vbuf/render stage. + */ +struct draw_stage *i915_draw_vbuf_stage( struct i915_context *i915 ) +{ + struct vbuf_render *render; + struct draw_stage *stage; + + render = i915_vbuf_render_create(i915); + if(!render) + return NULL; + + stage = draw_vbuf_stage( i915->draw, render ); + if(!stage) { + render->destroy(render); + return NULL; + } + /** TODO JB: this shouldn't be here */ + draw_set_render(i915->draw, render); + + return stage; +} |